Low noise amplifier (T466E)

Found in 1948 MIT documentation, this 4-tube amplifier is characterized by its low noise level.

Logic Control 555 (CB13832E)
The purpose of this modified astable is to make the initial pulses have the same duration as the...
Automatic MotorReversal Control (CB16632E)
This circuit makes it possible to reverse the direction of a DC motor through a relay controlled by a...
100 MHz Mixer (CB5350E)
The component used in this circuit that we found in an old documentation, is not easy to obtain...